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  • Selecting the Right VFD Cable
    Environmental cable performance has become a mainstream priority, from automotive assembly plants, to the renewable energy industry. When designing a robust VFD cable, the materials used in production are critical to ensure that the cable's electrical properties will guarantee performance
  • VFD Motor Testing (.pdf)
    VFD Technology has changed the way most of us do business in one way or another. If you have not been influenced in some way by this new technology, then stand by, your time is coming. We have all heard the horror stories about motor failures occurring minutes or hours after applying a new drive
  • Building a Reliable VFD System (.pdf)
    A Variable Frequency Drive (VFD) regulates the speed of a 3-phase AC electric motor by controlling the frequency and voltage of the power it delivers to the motor. Today, these devices (also known as Adjustable Speed Drives or Variable Speed Drives) are becoming prevalent in a wide range
  • Monitoring Variable Frequency Drives (VFD)
    Most modern variable frequency drives operate. by converting a three-phase voltage source to DC and use insulated gate bipolar transistors. (IGBT's) to switch the DC voltage on and off at. typically 3000 to 4000 hertz. Varying the. duration or width of the individual pulses [pulse width modulation
  • How To Calculate Heat Dissipation for VFD's
    When you're building a panel containing Variable Frequency Drives (VFDs), it's easy to underestimate their contribution toward the electrical enclosure's heat load. Part of the problem arises from the paucity of information supplied by manufacturers who don't always publish power dissipation or
  • Load Reactors - Increase VFD System Performance & Reliability
  • What Is The Default Password For An AC Tech SMVector VFD?
    This article illustrates how to access the parameter menu using the keypad on the SMVector drive with the default password.
  • How To Wire Three Phase Power To An SMVector VFD
    This article illustrates how to wire an SMVector series drive for a 240, 480 or 600 volt three phase main supply input. It also illustrates how to determine what voltage the SMVector drive is rated for.

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